Aiden's Revenge

About this game

Aiden's Revenge is a side-scrolling beat 'em up for one to four players, with 12 stages and 18 playable characters, from the family members who star in it to the family dog Doggo and two pet turtles. Bosses include a giant bull, a crowned crocodile and an armoured rhino. Press punch or start on the title screen to jump in; up to four game controllers work for couch co-op.

The game was designed and drawn by Aiden, the nephew of developer Lex Toumbourou. Lex gave Claude Fable 5.2, running in Claude Code, one overnight prompt to finish the game. The agent rewrote most of the earlier version, generated the art with an image model and the music, sound effects and announcer lines with ElevenLabs, and wrote a bot that played all twelve stages in a headless browser to check for bugs. Lex estimates the run used about 340 million tokens, most of them read from cache.